Portable electric reading-lamp.



S. J. LEVI & T. A. & A. H. ROSE.

PORTABLE ELECTRIC READING LAMP.

APPLICATION FILED APR. 16, 191a.

1,078,445, Patented Nov. 11, 1913.

INVE rJTdRs SAMUEL JOSEPH LEVI WITNESSES THOMAS AIZZHER'RO5E 1 ALFRED HENRY ROSE I BY UNITED STATES PATENT oEEIoE.

SAMUEL JOSEPH LEVI, THOMAS ARCHER ROSE, AND ALFRED HENRY ROSE, OF

LONDON, ENGLAND.

PORTABLE ELECTRIC READING-LAMP.

Specification of Letters Patent.

Patented Nov. 1 1, 1913.

Application filed April 16,1913. Serial No. 761,496.

. RosE, electrical engineer, and ALFRED HENRY Ross, electrical engineer, subjects of the King of Great Britain, and all residents'of 38 and 39 Beech street, London, E. (1, England,-have invented a certain new and useful Portable Electric Reading-Lamp, of which .the following is a specification. I

This invention relates to a portable electric lamp of the kind which is adapted to be clamped to various articles of furniture by a spring or screw clamp and is adjustable on a ball and socket joint, and has for its object to provide an improved construction thereof especially adapted for attachment to the cover or pages of books, magazines and the like, or to the lapel of the coat of the user, so that the light can be thrown on to the pages of such books, magazines and the like, or in any desired direction.

In a portable electric lamp constructed in accordance with the present invention, the bracket which carries the lamp is mounted upon a universal joint attached to one of the members of a spring clip; Referring to the accompanying drawings, Figure 1 is an elevation, partly in section, showing one form of portable electric lamp made in accordance with this invention, and F1 2 is a plan of the clamping device, joint, and lamp bracket.

The clamping device consists of a pair of plates a 5 each having a handle 0 lying out of the plane thereof, the plates a and b being held in the normal juxtaposed position shown in Fig. 1 by an embracing spring d; Each handle 0 is formed with an aperture, and between the aperture in the handle 0 of the plate a and an oppositely disposed aperture in a leaf spring 6 secured by a bolt 1 and nut g to said handle, is arranged a ball 71. carrying a tubular lamp bracket The ball A is provided with oppositely arranged apertures through which the bracket y' passes and in which it is secured by soloering or the like, and said bracket j gives passage to an electrical conductor is terminating in a head m insulated from the bracket j by a piece of insulating material n. The other electrical conductor 0 is secured to the arm 0 of the plate a by the nut g and bolt f and is in electrical connection through the leaf spring 6, the ball h, and the bracket j with a screwed socket p at the top of said bracket, which socket is formed integrally with a reflector g and is adapted to receive an electric lamp 1'. One end of the filament s of the lamp 1" is electrically connected with a screwed sleeve t while the other end passes through an insulating block (not shown) and terminates in a head it adapted to contact with the head at when the lamp r is screwed-into position in the socket p. The two conductors is and 0 are preferably in the form of twisted flexible wire and pass through the aperture in the handle 0 of the plate I) and are connected with the terminals of an electric battery '0.

In use, the battery '0 may be carried in the pocket and the lamp may be clipped to the cover ,or leaves of a book by pressing together the handles c,'thus separating the plates a and 7) against the action of the spring ti, and the bracket may be moved by means of the ball and socket joint, to direct the light in any required direction. If desired, the lamp may be clipped to the lapel of the coat of the user and the light directed on to the leaves of a book or elsewhere, either upward, downward, sidewise, or to the front according to the use for which the lamp is required, such for instance as for the examination of tickets on railways and the like, to facilitate the punching of tickets on omnibuses and tramways, to give light when searching for articles in dark cupboards, for use on dark stairways, and a variety of other useful purposes.

Claims:

1. A portable electric lamp adapted to be clamped to various articles, comprising a lamp bracket, a lamp on said bracket, a spring clamp having two spring-pressed members, a handle on each of said members, a ball and socket joint connecting said lamp bracket with one of said members, the ball of said joint being mounted on'said lamp bracket and adapted to seat in an aperture formed in one of said handles, and an apertured leaf spring secured to said handle and adapted to hold said ball in the first-named aperture.

2. A portable electric lamp adapted to be clamped to various articles, comprising a tubular lamp bracket, a screwed socket on said bracket, a lamp in said socket, said lamp having a pair of terminals in electric connection with the filament of said lamp, one of said terminals being centrally arranged at the base of said lamp and the other consisting of a screwed sleeve adapted to be screwed into said socket and to make electrical connection therewith, a spring clamp having two spring-pressed members,

a handle on each of said members, aball and socket joint connecting said tubular lamp bracket with one of said members, the ball of said joint being provided with oppositely arranged apertures through Which said tubular lamp bracket passes and in which said bracket is secured and said ball being adapted to seat in an aperture formed in one of said handles, an apertured leaf spring secured to said handle and adapted to hold said ball in the first-named aperture, a pair of electric conductors, one of which passes through said tubular lamp bracket and terminates in a head adjacent the central terminal of said lamp and the other of which is electrically connected with said screwed socket, said pair of electric conductors being in electrical connection with a source of electrical energy.

SAMUEL JOSEPH LEVI. THOMAS ARCHER ROSE. ALFRED HENRY ROSE.

Witnesses LILY LAKE, ERNEST BROWN. 

